Measuring sensor comprising a pre-stressing device

Abstract

The invention relates to a measuring sensor held under pre-stress for measuring forces and/or torques. In the inventive embodiment, a sensor is integrated into an adapter sleeve, which is configured in a compact manner in such a way that it is equipped with devices for connection to an adapter part and devices for fixing to a measuring component. The sensor is subjected to the required pre-stress by connecting the adapter sleeve to the adapter part. An amplification module can also be mounted in the adapter sleeve.

1. A measuring device for measuring forces and/or moments, comprising:
 an adaptor sleeve configured for receiving a sensor so as to hold the position of the sensor centered with respect to an axis through the center of said adaptor sleeve; 
 a sensor comprising elements received by said adaptor sleeve wherein the elements of the sensor are directly incorporated into the adaptor sleeve in a centered manner; and 
 an adaptor element connected to said adaptor sleeve such that said sensor is positioned between said adaptor sleeve and said adaptor element and such that said sensor is pre-stressed by the connection of said adaptor sleeve and said adaptor element. 
 
   
   
     2. The measuring device as set forth in  claim 1 , wherein said adaptor sleeve defines a recess that receives said sensor, and wherein said recess is located on said adaptor sleeve such that said sensor is centered about the axis of said adaptor sleeve. 
   
   
     3. The measuring device as set forth in  claim 1 , wherein said sensor is an electromechanical element. 
   
   
     4. The measuring device as set forth in  claim 1 , wherein said sensor is a piezoelectric element. 
   
   
     5. The measuring device as set forth in  claim 1 , wherein the connection between said adaptor sleeve and said adaptor element is effected through a direct connection by a screw thread. 
   
   
     6. The measuring device as set forth in  claim 1 , wherein the connection between said adaptor sleeve and said adaptor element is effected through an indirect connection between said adaptor sleeve and said adaptor element, 
   
   
     7. The measuring device as set forth in  claim 1 , further comprising at least one attachment device carried by at least one of said adaptor element or said adaptor sleeve and configured for attachment to an element to be measured. 
   
   
     8. The measuring device as set forth in  claim 1 , wherein said adaptor element and said adaptor sleeve define a mounting through bore through the center of said adaptor element and said adaptor sleeve. 
   
   
     9. The measuring device as set forth in  claim 1 , further comprising a connection plug in communication with said sensor, wherein said connection plug is configured for transmission of measuring signals. 
   
   
     10. The measuring device as set forth in  claim 1 , further comprising an amplifier arrangement for amplification of a signal from said sensor. 
   
   
     11. The measuring device as set forth in  claim 1 , further comprising an amplifier arrangement carried within a recess defined by said adaptor sleeve. 
   
   
     12. The measuring device as set forth in  claim 1 , further comprising an amplifier casing connected to said adaptor sleeve, and further comprising an amplifier arrangement carried by said amplifier casing. 
   
   
     13. The measuring device as set forth in  claim 12 , wherein said amplifier casing is removably connected to said adaptor sleeve.